初二数学寒假作业题(中华一题)化简:a/1*2+a/2*3+a/3*4+```````+a/99*100

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初二数学寒假作业题(中华一题)化简:a/1*2+a/2*3+a/3*4+```````+a/99*100
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初二数学寒假作业题(中华一题)化简:a/1*2+a/2*3+a/3*4+```````+a/99*100
初二数学寒假作业题(中华一题)
化简:a/1*2+a/2*3+a/3*4+```````+a/99*100

初二数学寒假作业题(中华一题)化简:a/1*2+a/2*3+a/3*4+```````+a/99*100
原式=a*(1/1*2+1/2*3+1/3*4+……+1/99*100)
=a*(1/1-1/2+1/2-1/3+1/3-1/4+……+1/99-1/100)
=99*a/100